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| author | Regina Henschel <rb.henschel@t-online.de> | 2023-06-03 14:56:29 +0200 |
|---|---|---|
| committer | Regina Henschel <rb.henschel@t-online.de> | 2023-06-05 17:34:57 +0200 |
| commit | 6c49886ab46c53398d74610b264e5edb0332a059 (patch) | |
| tree | 4be7b6fcc85f2ca9388ed0a470d035a7cb7a3c7d /xmloff/source/style/GradientStyle.cxx | |
| parent | 6014fd047a62e1a002cc27334e39e1d2e54e342f (diff) | |
tdf#155549 MCGR: Recreate 'axial' from symmetric 'linear'
When exporting a shape with an axial gradient fill to OOXML, it is
converted to a linear gradient with multiple color stops. Versions
before MCGR had recreated it as axial gradient on import from OOXML.
But now LO is able to handle multiple color stops and so the linear
gradient from OOXML is imported as linear gradient in LO.
When such file is then written as ODF, the multiple color stops are
in elements in extended namespace and versions before MCGR do not
understand them. They show only the first and last color (which are
equal) and the gradient is lost.
With this patch LO converts the linear gradient back to an axial gradient
on export to ODF. The exported axial gradient is rendered in a version
with MCGR same as the linear gradient when opening the OOXML file. The
difference is, that versions without MCGR now render an axial gradient
with two colors.
Change-Id: I2b416b4cdca75d8327107a4f259d63c2e6e97ac3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/152574
Tested-by: Jenkins
Reviewed-by: Regina Henschel <rb.henschel@t-online.de>
Diffstat (limited to 'xmloff/source/style/GradientStyle.cxx')
| -rw-r--r-- | xmloff/source/style/GradientStyle.cxx | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/xmloff/source/style/GradientStyle.cxx b/xmloff/source/style/GradientStyle.cxx index 7598074fc409..d80b3f866482 100644 --- a/xmloff/source/style/GradientStyle.cxx +++ b/xmloff/source/style/GradientStyle.cxx @@ -228,6 +228,11 @@ void XMLGradientStyleExport::exportXML( basegfx::BGradient aGradient(rValue); + // Export of axial gradient to OOXML produces a symmetrical linear multi-color gradient. Import + // does not regenerate it as 'axial' because that is not needed for MCGR. For export to ODF we + // try to regenerate 'axial' for to get a better compatibility with LO versions before MCGR. + aGradient.tryToConvertToAxial(); + // MCGR: For better compatibility with LO versions before MCGR, try // to re-create a 'border' value based on the existing gradient stops. // With MCGR we do not need 'border' anymore in quite some cases since |